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package juloo.keyboard2;
import android.content.res.Resources;
import android.view.KeyEvent;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public final class LayoutModifier
{
static Config globalConfig;
static KeyboardData.Row bottom_row;
static KeyboardData.Row number_row;
static KeyboardData num_pad;
/** Update the layout according to the configuration.
* - Remove the switching key if it isn't needed
* - Remove "localized" keys from other locales (not in 'extra_keys')
* - Replace the action key to show the right label
* - Swap the enter and action keys
* - Add the optional numpad and number row
* - Add the extra keys
*/
public static KeyboardData modify_layout(KeyboardData kw)
{
// Extra keys are removed from the set as they are encountered during the
// first iteration then automatically added.
final Map<KeyValue, KeyboardData.PreferredPos> extra_keys = new HashMap<KeyValue, KeyboardData.PreferredPos>();
final Set<KeyValue> remove_keys = new HashSet<KeyValue>();
// Make sure the config key is accessible to avoid being locked in a custom
// layout.
extra_keys.put(KeyValue.getKeyByName("config"), KeyboardData.PreferredPos.ANYWHERE);
extra_keys.putAll(globalConfig.extra_keys_param);
extra_keys.putAll(globalConfig.extra_keys_custom);
if (globalConfig.extra_keys_subtype != null && kw.locale_extra_keys)
{
Set<KeyValue> present = new HashSet<KeyValue>();
present.addAll(kw.getKeys().keySet());
present.addAll(globalConfig.extra_keys_param.keySet());
present.addAll(globalConfig.extra_keys_custom.keySet());
globalConfig.extra_keys_subtype.compute(extra_keys,
new ExtraKeys.Query(kw.script, present));
}
KeyboardData.Row added_number_row = null;
if (globalConfig.add_number_row && !globalConfig.show_numpad)
added_number_row = modify_number_row(number_row, kw);
if (added_number_row != null)
remove_keys.addAll(added_number_row.getKeys(0).keySet());
if (kw.bottom_row)
kw = kw.insert_row(bottom_row, kw.rows.size());
kw = kw.mapKeys(new KeyboardData.MapKeyValues() {
public KeyValue apply(KeyValue key, boolean localized)
{
boolean is_extra_key = extra_keys.containsKey(key);
if (is_extra_key)
extra_keys.remove(key);
if (localized && !is_extra_key)
return null;
if (remove_keys.contains(key))
return null;
return modify_key(key);
}
});
if (globalConfig.show_numpad)
kw = kw.addNumPad(modify_numpad(num_pad, kw));
if (extra_keys.size() > 0)
kw = kw.addExtraKeys(extra_keys.entrySet().iterator());
if (added_number_row != null)
kw = kw.insert_row(added_number_row, 0);
return kw;
}
/** Handle the numpad layout. The [main_kw] is used to adapt the numpad to
the main layout's script. */
public static KeyboardData modify_numpad(KeyboardData kw, KeyboardData main_kw)
{
final int map_digit = KeyModifier.modify_numpad_script(main_kw.numpad_script);
return kw.mapKeys(new KeyboardData.MapKeyValues() {
public KeyValue apply(KeyValue key, boolean localized)
{
switch (key.getKind())
{
case Char:
char prev_c = key.getChar();
char c = prev_c;
if (globalConfig.inverse_numpad)
c = inverse_numpad_char(c);
if (map_digit != -1)
{
KeyValue modified = ComposeKey.apply(map_digit, c);
if (modified != null) // Was modified by script
return modified;
}
if (prev_c != c) // Was inverted
return key.withChar(c);
return key; // Don't fallback into [modify_key]
}
return modify_key(key);
}
});
}
/** Modify the pin entry layout. [main_kw] is used to map the digits into the
same script. */
public static KeyboardData modify_pinentry(KeyboardData kw, KeyboardData main_kw)
{
KeyboardData.MapKeyValues m = numpad_script_map(main_kw.numpad_script);
return m == null ? kw : kw.mapKeys(m);
}
/** Modify the number row according to [main_kw]'s script. */
static KeyboardData.Row modify_number_row(KeyboardData.Row row,
KeyboardData main_kw)
{
KeyboardData.MapKeyValues m = numpad_script_map(main_kw.numpad_script);
return m == null ? row : row.mapKeys(m);
}
static KeyboardData.MapKeyValues numpad_script_map(String numpad_script)
{
final int map_digit = KeyModifier.modify_numpad_script(numpad_script);
if (map_digit == -1)
return null;
return new KeyboardData.MapKeyValues() {
public KeyValue apply(KeyValue key, boolean localized)
{
switch (key.getKind())
{
case Char:
KeyValue modified = ComposeKey.apply(map_digit, key.getChar());
if (modified != null)
return modified;
break;
}
return key;
}
};
}
/** Modify keys on the main layout and on the numpad according to the config.
*/
static KeyValue modify_key(KeyValue orig)
{
switch (orig.getKind())
{
case Event:
switch (orig.getEvent())
{
case CHANGE_METHOD_PICKER:
if (globalConfig.switch_input_immediate)
return KeyValue.getKeyByName("change_method_prev");
break;
case ACTION:
if (globalConfig.actionLabel == null)
return null; // Remove the action key
if (globalConfig.swapEnterActionKey)
return KeyValue.getKeyByName("enter");
return KeyValue.makeActionKey(globalConfig.actionLabel);
case SWITCH_FORWARD:
return (globalConfig.layouts.size() > 1) ? orig : null;
case SWITCH_BACKWARD:
return (globalConfig.layouts.size() > 2) ? orig : null;
case SWITCH_VOICE_TYPING:
case SWITCH_VOICE_TYPING_CHOOSER:
return globalConfig.shouldOfferVoiceTyping ? orig : null;
}
break;
case Keyevent:
switch (orig.getKeyevent())
{
case KeyEvent.KEYCODE_ENTER:
if (globalConfig.swapEnterActionKey && globalConfig.actionLabel != null)
return KeyValue.makeActionKey(globalConfig.actionLabel);
break;
}
break;
}
return orig;
}
static char inverse_numpad_char(char c)
{
switch (c)
{
case '7': return '1';
case '8': return '2';
case '9': return '3';
case '1': return '7';
case '2': return '8';
case '3': return '9';
default: return c;
}
}
public static void init(Config globalConfig_, Resources res)
{
globalConfig = globalConfig_;
try
{
number_row = KeyboardData.load_number_row(res);
bottom_row = KeyboardData.load_bottom_row(res);
num_pad = KeyboardData.load_num_pad(res);
}
catch (Exception e)
{
throw new RuntimeException(e.getMessage()); // Not recoverable
}
}
}
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